2 10 divided by the average of the total number of 70 in the two classes, you get 88 points. It can be found that each point of 2 10 gets 3 points, that is, 2 10/70=3.
The average score of class one students is 3 points less than that of all students, that is, 88-3=85.
The average score of class two students is 7 points higher than that of class one students, that is, 85+7=92.